The words "cheap" and "bargain" might look like synonyms. But as I'm using them, the difference has everything to do with the future. Well-know retailer Target (TGT -0.79%) trades at just 11 times its earnings, which is about 60% cheaper than the S&P 500, which trades at about 28 times earnings, according to YCharts. But it's not a good idea to invest in a stock simply because it looks cheap. If Target's profits drop further, this cheap stock likely isn't a bargain. In other words, Target stock is "cheap" w ...